Update setup-arcium for CI

Author: mikemaccana

.github/workflows/test.yml

@@ -15,8 +15,7 @@ jobs:
       # Install system dependencies for hidapi (needed on GitHub Actions environment)
       - name: Install libudev
         run: sudo apt-get update && sudo apt-get install -y libudev-dev
-      # Note this doesn't follow Arcium versions
-      - uses: arcium-hq/setup-arcium@v0.3.0
+      - uses: arcium-hq/setup-arcium@v0.5.1
         with:
           runner-arch-os: x86_64_linux
           # TODO: fix for outdated default Solana CLI